ATI TEAS 7 📌 Math (Formulas)

Percentage

Part = % • Whole

Percent Increase

New # - Old # / Old # x 100%

Standard Form Linear Equation

Ax + By = C

Slope Intercept Form

y = mx + b

Point Slope Form

y - y1 = m(x-x1)

Two Point Form

y - y1 / x - x1 = y2 - y1 / x2 - x1

Slope Equation aka Rate of Change

m = (y2 - y1) / (x2 - x1)

Theoretical Probability

P(A) = # of acceptable outcomes / # of possible outcomes

Square

P = 4 • s

A = s^2

Rectangle

P = 2l + 2w

A = l • w

Triangle

P = a + b + c

A = 1/2bh

Paralellogram

P = 2(a + b)

A = bh

Trapezoid

P = a + b1 + b2 + c

A = b1 + b2 / 2 • h

Circle

P = 2πr

A = πr^2

Rhombus

A = 1/2 x d1 xd2

Rectangular Prism

V = l • w • h

Triangular Prism

V = b • h • l / 2

Cylinder

V = πr^2h

Cone

V = 1/3πr^2h

Rectangular Pyramid

V = l • w • h / 3

Sphere

V = 4/3πr^3

Standard Conversion Chart

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Metric System

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Converting Between Standard and Metric Systems

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Hypotenuse of a Triangle

c = √a^2 + b^2

or

c^2 = a^2 + b^2

1kg= lbs

2.2 lbs

1in= cm

2.54 cm

1 meter= ft

3.28 ft

1oz= g

28.35 g

1 mile= km

1.6 km

1 mile= yd

1760 yd

1 pound= oz

16oz